Telescope



H, W. HALES.

l TELESCOPE. APPucAHoN FILED SEPT. 2o. 1920.

AQTQQQT, Patented Aug. 29, 1922,

vHENRY W. HALES, OF RDGEWOOD, NEW JERSEY.

TELESCOPE.

Continuation of application Serial No. 225,200.7i1ed March 28, 1918. 1920. Serial No. 411.583.

.To all whom t may concern:

lie it known that I, HENRY lV. HALEs, a citizen of the United States, and a resident of Ridgewood, in the county of Bergen and State of New Jersey, have invented a new and Improved Telescope, of which the foilowing is a full, clear, and exact description, this being a continuation of the application for Letters Patent of the United States, Serial N o. 225,200, liled by me on March 28, 1918.

The object of this invention is to produce a new and extremely compact telescope for observing distant objects and to obtain all the advantages of the prism binocular without its costliness and defects. It is well `known thatv with the prism binocular sysproduced that is extremely light and compact andy gives about twice the power of the ordinary telescope size for size. There no prisms to tarnish or get out of alinement as in the prism binocular and while my invention gives all the plastic effect of `the prism binocular, yet it is much lighter vin weight, simpler in construction, and of very much higher power. i

Another object of the invention is to produce a simple and exceedingly strong construction and one that needs no case or covering for carrying.` It is therefore more quickly adjusted and used. For army and navy use and also for sporting purposes an instrument of this kind receives much hard usage, and quickness of handling and adjustment, and a strong, practical construction are absolutely necessary to produce the best` results. One difficulty in using all high power glasses heretofore has been to hold them steady enough. This has been largely overcome by my construction as the instrument when used is held steadily against the face and the focusing is done by moving the objective at the farther end. As the instrument is of an extremely short construction this is readily and easily done, and both eyes Specification of Letters Patent. patgnted Ang; 29, 1922.

This application filed September 20,

of the observer being kept wide open itis evident that all eye strain is eliminated.

' `While l have shown what I consider the most vdesirable construction, both of the optical and the mechanical parts, it is evident that departure may be made therefromwithout detriment to the invention and I do not therefore limit myself to the exact detail herein shown, a wide latitude sometimes being necessary in constructing telescopes for different purposes. The construction shown produces an extremely good, portable instrument for aviation, army, navy and general purposes, and is readily carried in the pocket, or can be slung with a strap if so desired. The outside being entirely smooth there is nothing to catch in the clothing or on nearby moving objects, and its peculiar lightness and strength is of great advantage. u l/Vith these and other objects in view, the invention consists of certain novel features of construction, as hereinafter shown and described and then specifically pointed out y in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a plan view of the telescope with the parts in closed position;

Figure 2 is a similar view of the same with parts shown in section;

Figure 3 is a similar view of the same with the parts extended;

Figure 4 is a sectional plan view of the same; and

Figure 5 is a front endview of the same.

The telescope in its general construction consists essentially of a tubular objective section 10 and a tubular eyepiece section ll. mounted to slide and to turn in the objective section l0. The outer end of the objective section l() is provided with an achromatic objective l2 and this outer end is adapted to be closed by a suitable removable cap 155 when the telescope is not in use.` In the eyepiece section 1l is mounted an achromatic reversing eyepiece 14 to define the images of the landscape or Seascape in relief with a roundness or plastic effect. v

The inner end of the objective section l() is provided with an interior collar 2O forming a bearing for the eyepiece section 1l, which latter is provided at its forward end with spaced collars 2l and 22 having bearings on the inner surface of' the objective section 10, as plainly indicated in the drawings, thus insuring proper alinement at all? times of the sections l() and 1l especially when thel section 11 is drawn out by the user until the desired focus is obtained, but in order to enable the user to manually adjust the sections for obtaining an accurate focus thefollowing. arrangement is made: The eyepiece section ll is provided eXteriorlyv adjacent the collar 22 `With an exterior spiral groove 25 adapted to be engaged by apin 26 held on the Jr'ree end of a flat springV 27 secured to the rear end ot the objective section 10, the pin 26 extending through the collar as plainly indicated in Figure 3. It Will be noticed that when the tubulan eyepiece section is drawn out into focusing positionl or nearly so then the pin 26 engagesthe spiral groove 25, and the user on now turning the tubular sections l0 and 1I one relative tothe other causes the section 11 to move inward or outward in the section 10 according to the direction in which the sections are turned one relative to the other. On turning the sections one relative to the other the pin 26 in engagement with the` groove insuresv a sionYV advance or retraction of the tubular section 1lin the tubular section l0 thus enablingv the user to obtain an accurate focus. When the sections l0 and ll are in closed position then thepin 26 engages an annular' groove 23 formed in the forward end of the tubular eyepiecesection ll thus holdingrtlie sections l() and 1l against accidental outward more ment one relative to the other.

By reference to the drawings it will be noticed that the pin or stud 26 is rounded off` at the end and-thespi'ral'groove 25 is in the form of a depression Yformed in the eyepiece section il, and the cross section oi the Agroove 25 corresponds to the rounded ofi end of thepin or stud 26 to allow of jumping the pin or stud out or into the 2f roove 25 on moving the eyepiece section li into closed or'open position.

It will be noticed that by the arrangement described the eyepiece section ll can; be

readily extended or closed irrespectiv ot" the action of the pin or stud 26 relative to the groove 25. lt will 'further be noticel t-hatthe pin or stud moves readily into ai tive position on extending' thc eyepiece-src tion il ltoA allow minute adjustment tor y curate focusing' of the telescope.

The rear end of the eyepiece section il j terminates in an enlargement or a head 30 by a hinge 32 with a lug 33 formed on one side" of a; cap 34 adapted to close the eyepiece 14 during` the time the telescope is not in use to protect the eyepiece against dust, the same as the cap i3 is used for protecting t-he objective l2. The cap 34 when in closed position is locked therein by a spring catch 35 engaging a pin 36 held on the'head 30. The cap 34 is adapted to be swung into an open position so that its axis is parallel to the axis ot the eyepiece 14j. and the cap is such a distance Jrom the eyepiece i4 that when the telescope is used one eye of the user looks through the eyepiece i4fwhile the other eye looks into the cap 34, and as the latter is preferably blackened on the inside it is evident that the user can aeep both eyes open While making observations, one eye being the observing` eye at the eyepiece and the other eye being the non-observingy eye looking into the cap 34. lt is understood that by providing the lugs 3l and 33 the cap 34 is swung tar enough to one side so as to be practically central with the non-observing` eye. It Will be noticed that by the arrangement described the cap 34 not only forms a protector Yfor the eyepiece i4 but also forms a blinder for the non-observing' eye of the user or' the telescope. The cap 34 is oi' an exterior diameter corresponding to the interior diameter of the objective cap 13 so that when the latter is removed and the eyepiece cap 34 is in open position then the cap 13 can be slipped onto the cap 34, as plainly shown in Figures 2 and 3', to prevent the cap 13 Jfrom being` lost and mis` placed While the telescope is used. lt is understood that when thev telescope has 'been against the entry of foreign substances, said recessed cap being adapted when lrhe telescope is in use to be moved to a position atv which the .saine will lie substantially parallel to the end oi: said eye piece section whereby to act as a blinder 'for the nonobserving` eye of the user.

l-llEiNRiT lV. HLES. 

